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Standards GB - Chinese national standards - Page 5117
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
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GB/T 6653-2017
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Steel plates and strips for welded gas cylinders
Standard published on 29.12.2017
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GB/T 6656-2025
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D.C. ferrite permanent magnet motors
Standard published on 31.10.2025
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GB/T 666-2011
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Chemical reagent - Zinc sulfate heptahydrate
Standard published on 12.5.2011
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GB/T 6661-1986
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Nipples for insert earphones
Standard published on 31.7.1986
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GB/T 6663.1-2007
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Directly heated negative temperature coefficient thermistors - Part 1: Generic specification
Standard published on 9.2.2007
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GB/T 6669-2008
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Flexible cellular polymeric materials - Determination of compression set
Standard published on 19.8.2008
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GB/T 667-2023
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Chemical reagent—Zinc nitrate hexahydrate
Standard published on 6.8.2023
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GB/T 6670-2008
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Flexible cellular polymeric materials - Determination of resilience by ball rebound
Standard published on 19.8.2008
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GB/T 6671-2001
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Thermoplastics pipes--Determination of longitudinal reversion
Standard published on 24.10.2001
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GB/T 6672-2001
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Plastics film and sheeting--Determination of thickness by mechanical scanning
Standard published on 24.10.2001
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